Weather in Richmond Hill, Ontario, Canada in September
In an average September, Richmond Hill sees a daily high around 22°C and a low around 12°C, based on 1981–2026 of local climate records.
| Average high | 22°C |
|---|---|
| Typical high range | 17°C to 28°C |
| Average low | 12°C |
| Typical low range | 7°C to 16°C |
| Average daily precipitation | 3 mm |
September records
The most extreme September on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total September accumulation.
High
Highest
34°C
2023-09-04
Lowest
9°C
1993-09-29
Low
Highest
22°C
2015-09-08
Lowest
0°C
1989-09-27
Feels-like
Highest
45°C
2013-09-10
Lowest
-5°C
1991-09-30
Humidity
Highest
20.2 g/m³
2016-09-07
Lowest
3.7 g/m³
2000-09-28
Wind
Highest
54 km/h
2005-09-29
Lowest
5 km/h
1996-09-01
Precip
Wettest
136 mm
1986
Driest
17 mm
2023
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